Chain pipe-wrench.



A. L. MOORE. CHAIN PIPE WRENCH.

APPLIUATION FILED MAR.12, 1912.

PatentedMaf.4,l913.

IN'VENTOR, L-JZZ. Mare,

ATTORNEY.

ARTHUR L. MOORE, 0F SPRINGFIELD, MASSACHUSETTS.

CHAIN PIPE-WRENCH.

Specification of Letters Patent.

Patented Mar. 4, 1913.

Application filed March 12, 1912. Serial No. 683,190.

To all whom it may concern Be it known that I, ARTHUR L. MOORE, acitizen of the United States of America, and resident of Springfield, inthe county of Hampden and State of Massachusetts, have invented certainnew and useful Improvements in Chain Pipe-Wrenches, of which thefollowing is a full, clear, and exact description.

This invention relates to chain pipe wrenches of the very common kind inwhich the head portion of the wrench is constituted by a pair ofseparated jaws, formed as part of or rigidly connected to a handle barand in which the chain is pivoted to the head portion, between the jaws,so that it may swing to one side or the other for coaction, reversiblywith either of the working edges of the jaws, the head portion havinglooks or abutments for engagement therewith of lateral projections orstuds made as suitably spaced portions of the chain.

The object of this invention is to provide at the end of the chainopposite that by which it is connected to the head portion of the wrench.a clip composed of thin spring metal which is adapted to detachably andyieldingly embrace and engage the handlebar and to be slidable along thelatter, so as to serve as a means for keeping the chain engaged with thehandlebar at any point along the length thereof as may be necessary topermit of the usual operation of the chain in conjunction with the headof the wrench, by a workman, and thereby preventing the slat-ting of thechain to the rear of its locking point on the head and avoidingannoyance and inconvenience to the user.

The invention is described in the accompanying drawings and as set forthin the claims.

In the drawings: Figure 1. is a sectional elevation of a chain pipewrench having the present improvement embodied therein. Fig. 2 is a planview of the same, the position of the chain being different from thatrepresented in Fig. 1. Fig. 3 is a side elevation of the wrench showingthe changed position of the same corresponding to Fig. 2. Figs. 4 and 5are detailed views of clip and the end link of a chain by which it iscarried.

In the drawings A represents the head portion of the wrench comprisingthe oppositely located separated jaws B B, the op posite edges of whichare forwardly convergent and rigidly connected to the comparatively longhandlebar C.

D represents the chain pivotally connected at a to the head between thepair of jaws thereof and adapted to be swung to either the upper orlower side of the head as desired. The chain is made with lateral studsor projections b for engagement with the locking abutments cl formed,and rearwardly facing on the head.

G represents the clip which is pivotally connected to the chain at itsend opposite that by which such chain is connected to the wrench head,such clip being adapted to constrictively embrace the handlebar and tobe slidable along the latter.

The chain at its end to which the spring clip is connected by the pivotor rivet 7" includes a pair of separate and oppositely arranged links 9g, and the clip is composed of a strip of thin spring metal theintermediate portion 10 of which is return bent to an elongated U formextremities of said thin metal being outwardly extended as shown at 1212 and downwardly continued in parallelism in the portions 13 13,separated by a distance approximately the same as the width of thehandlebar, such portions 13 13 terminating in the parts inwardly curvedas shown at 14 and outwardly deflected as shown at 15. The U formportion 10 is crowded between the opposite links 9 and connected by theaforementioned rivet f. The rear end of the chain may, as apparent, bereadily engaged with or disengaged from the handlebar, but it will bymeans of the clip be retained in the slidable engagement with thehandlebar well forward thereon, or as far toward the rear end as may bedesired for any indefinite time; and the chain while being used by aworkman or while being transported, or in storage, will be preventedfrom slatting or, flapping on the wrench as is manifest and of apparentadvantage. WVhen an extra long chain is employed the lateral studs orstops 6 of one of its links may be seated in the locking recess-es (Zthereby limiting the number of links of the chain supported in grippingposition.

I claim 1. A chain pipe wrench comprising a handle and duplex taperedjaws on the end of the handle, a chain comprising a plurality of linkspivoted at one end to the handle between said jaws, and a clipcomprising a U- shaped body of spring metal formed with shouldersengageable with the handle and opposing spring jaws having insetterminals adapted to hold said jaws in clasping position on the handle,the end portion near said shoulders being pivoted to the free end of thechain and said clip being adapted to be adjusted to various positions onsaid handle.

2. In a chain pipe wrench comprising a head portion and handle bar, thecombination with the chain connected to the head portion of the wrench,and a member enibracing and slidable along the bar. and to which the endof the chain is pivoted, and

means whereby the chain may be disengaged from the bar.

3. In a chain pipe wrench, a handle, duplex tapering jaws on one endthereof, a link chain pivoted at one end between the jaws, holding meansfor engaging any one of the links of the chain to limit the number oflinks in gripping position, and amember pivoted to the chain, andadapted to slidably embrace said handle.

Signed by me at Springfield, Mass, in presence of two subscribingwitnesses.

. ARTHUR L. MOORE. Witnesses G. R. DRISCOLL, E. E. ERICSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

